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ls.go
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ls.go
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package ls
import (
"fmt"
"strings"
"github.com/macinnir/dvc/core/lib"
"github.com/macinnir/dvc/core/lib/schema"
"go.uber.org/zap"
)
const CommandName = "ls"
// Ls lists database information
// TODO search fields
// TODO select from tables
// TODO show row counts in a table
func Cmd(logger *zap.Logger, config *lib.Config, args []string) error {
localSchemaList, _ := schema.LoadLocalSchemas()
// database, e := lib.LoadSchema(config.Databases[0])
// if e != nil {
// return e
// }
// Options
// ls Show all Tables
// ls [name] Show all Columns in table [name] is found
// ls [partialName] Show all tables with name containing [partialName]
// ls .[fieldPartialName] Show all columns with name containing [fieldPartialName]
// ls - Show all tables
// fmt.Println("args", args)
if len(args) == 0 {
t := lib.NewCLITable([]string{"Schema", "Table", "Columns", "Collation", "Engine", "Row Format"})
for k := range localSchemaList.Schemas {
localSchema := localSchemaList.Schemas[k]
results := localSchema.ToSortedTables()
for _, table := range results {
t.Row()
t.Col(localSchema.Name)
t.Col(table.Name)
t.Colf("%d", len(table.Columns))
t.Col(table.Collation)
t.Col(table.Engine)
t.Col(table.RowFormat)
}
}
fmt.Println(t.String())
return nil
}
// ls .[fieldPartialName] - Show all columns with names containing [fieldPartialName]
if strings.HasPrefix(args[0], ".") {
if args[0] == "." {
return nil
}
fieldSearch := strings.Trim(strings.ToLower(args[0][1:]), " ")
fmt.Printf("Searching all fields for `%s`\n", fieldSearch)
t := lib.NewCLITable([]string{"Schema", "Table", "Name", "Type", "MaxLength", "Null", "Default", "Extra", "Key"})
for k := range localSchemaList.Schemas {
localSchema := localSchemaList.Schemas[k]
sortedTables := localSchema.ToSortedTables()
columns := []*schema.ColumnWithTable{}
for j := range sortedTables {
for k := range sortedTables[j].Columns {
if strings.Contains(strings.ToLower(sortedTables[j].Columns[k].Name), fieldSearch) {
column := &schema.ColumnWithTable{
Column: sortedTables[j].Columns[k],
TableName: sortedTables[j].Name,
}
columns = append(columns, column)
}
}
}
for _, col := range columns {
t.Row()
t.Col(localSchema.Name)
t.Col(col.TableName)
t.Col(col.Name)
t.Col(col.DataType)
t.Colf("%d", col.MaxLength)
if col.IsNullable {
t.Col("YES")
} else {
t.Col("NO")
}
t.Col(col.Default)
t.Col(col.Extra)
t.Col(col.ColumnKey)
}
}
fmt.Println(t.String())
return nil
}
// ls [tableName] - Show all column in the table [tableName]
var table *schema.Table
tableName := strings.Trim(strings.ToLower(args[0]), " ")
schemaName := ""
for k := range localSchemaList.Schemas {
localSchema := localSchemaList.Schemas[k]
// findTable
for k := range localSchema.Tables {
if strings.ToLower(localSchema.Tables[k].Name) == tableName {
table = localSchema.Tables[k]
schemaName = localSchema.Name
// Found
break
}
}
}
if table != nil {
t := lib.NewCLITable([]string{"Schema", "Name", "Type", "MaxLength", "Null", "Default", "Extra", "Key"})
fmt.Printf("Listing all columns for table `%s`\n", tableName)
sortedColumns := table.ToSortedColumns()
for _, col := range sortedColumns {
t.Row()
t.Col(schemaName)
t.Col(col.Name)
t.Col(col.DataType)
t.Colf("%d", col.MaxLength)
if col.IsNullable {
t.Col("YES")
} else {
t.Col("NO")
}
t.Col(col.Default)
t.Col(col.Extra)
t.Col(col.ColumnKey)
}
fmt.Println(t.String())
return nil
}
// ls [partialTableName] - Show all tables with name containing [partialTableName]
t := lib.NewCLITable([]string{"Schema", "Table", "Columns", "Collation", "Engine", "Row Format"})
for k := range localSchemaList.Schemas {
localSchema := localSchemaList.Schemas[k]
sortedTables := localSchema.ToSortedTables()
tableSearch := strings.Trim(strings.ToLower(args[0]), " ")
for _, table := range sortedTables {
if !strings.Contains(strings.ToLower(table.Name), tableSearch) {
continue
}
t.Row()
t.Col(localSchema.Name)
t.Col(table.Name)
t.Colf("%d", len(table.Columns))
t.Col(table.Collation)
t.Col(table.Engine)
t.Col(table.RowFormat)
}
}
fmt.Println(t.String())
return nil
}